Name that part

I'm bored at work. Lets play a game. ITT anons post pictures of parts, the more obscure the better, and other anons identify the part and explain its use. Hopefully someone can learn something. I'll start.

Astronomical Carburetor

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a turny thing

OP here, as a hint because you can't tell from the picture, this thing is a bit bigger than a nut, probably a couple inches across.

Does it fasten or regulate?

That's a nut. If there were two it would be DEEZ NUTZ!

jesus this forum is retarded. that's a CV star from a plunging crossgroove CV. type 1/2 930 etc.

Correct! Also known as an inner race.

Damn, I would've beat you to it if I didn't get a call from the office.

Inside of a CV joint? Looks like part of some sort of knuckle.

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Water pump gasket for an 80 something... Toyota? I4

scrotal gasket

close, 97-2013 Tacoma water pump gasket.

lel

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hehehe

Part of a steering rack?

balls

very close

Shear bolt, probably for a steering column

Any hints? My other guess is a window or panel crank but it looks way too robust for that

And this one looks like a weird door latch assembly

Here's a good one

it's a steering part, but out of the alternative to a rack

Nice pistons

Goddamn I should've known that right off, recirculating ball worm steering.

Yup!

Cvj with bearing bracket?

Muffler bearing

GL

lifters

wheel bearing?

Nope not a lifter or part of the valves

Here's a hint vw/Audi
And it's part of the fuel system

Pistons from an old diesel distributor pump?

Cam follower. A friend replaces these all the time on his various VWs